Non-Mendelian Inheritance: Multiple Alleles

Multiple Alleles: Blood types

• Non-mendelian inheritance

• more than two alleles are available for a trait

• Human blood types are an example

In human blood types there are 3 alleles (instead of 2) that could be inherited:

• Allele A

• Allele B

  • A and B are CODOMINANT

• Allele O

  • O is recessive to both A & B

​Blood Type Alleles:

Blood type genotypes can be written with scientific notation/superscripts or with just the letters "A", "B", "AB", or "O"

Be sure to write these on your note page!

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​Blood Type Genotypes:

Match

Match the following

• I^AI^{A or} I^Ai

• ii or I^oI^o

• I^AI^B

• I^BI^B or I^Bi

Type A

Type O

Type AB

Type B

• Type A

• Type O

• Type AB

• Type B

​Universal Donor

• Can donate to all types

• can only receive from type O

Type O

​Universal Receiver

• Can receive blood from all types

​​Type AB

Open Ended

Lisa is type A and has a baby, FuFu, that is type O. Mark is Type B and David is Type AB and both men are claiming to be FUFU's father. Explain which one could most likely be the father of FuFu.

(Draw a punnett square on your note page and upload below to go along with your explanation)